Snapshot from latest ECMWF model run depicting northward lifting of atmospheric river this evening.

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   Daniel Swain (weatherwest@mastodon.social)'s status on Tuesday, 04-Feb-2025 17:21:38 JST Daniel Swain

   The warm, moist, and slow-moving atmospheric river has lifted back northward (temporarily, and as expected) as a frontal wave causes a classic "windshield wiper effect" over NorCal. But heavier rain is now moving back southward as cold front approaches... #CAwx #CAwater